Final answer:
Hominins started using stone tools about 2.6 million years ago with the development of Oldowan tools by Homo habilis, which were used for hunting and butchering. These represent a significant technological advancement and evolved into more complex forms in later hominin species.
Step-by-step explanation:
Early Use of Stone Tools by Hominins
Hominins began using stone tools approximately 2.6 million years ago. The creation of these early implements, often referred to as Oldowan tools, is attributed to the species Homo habilis. The simple practice of smashing rocks together to create a sharpened edge marked a significant advancement in human engineering skills. These stone tools had various applications such as cutting, scraping, and chopping. Initially, they were indispensable in tasks like hunting, butchering meat, and breaking bones to access marrow. Over time, as hominins evolved, their tools became more sophisticated.
The Oldowan tools represent the oldest known stone tool industry and are a testament to the early technological achievements of our ancestors. The usage of these tools by hominins like Homo habilis and possibly Paranthropus boisei facilitated the transition from a more herbivorous diet to one that included more animal protein. Subsequently, Homo ergaster continued the use of Oldowan tools, but also introduced more complex tools belonging to the Acheulean industry, characterized by bifacial handaxes and cleavers.